/Engine/Plugins/Animation/DeformerGraph/Source/OptimusCore/Public/OptimusNode.h
virtual bool ValidateConnection ( const [UOptimusNodePin](API\Plugins\OptimusCore\UOptimusNodePin) & InThisNodesPin, const [UOptimusNodePin](API\Plugins\OptimusCore\UOptimusNodePin) & InOtherNodesPin, [FString](API\Runtime\Core\Containers\FString) * OutReason ) const